Even though the focus of this snowy snapshot seems to be the horses, the folks in the carriage are identified; the horses are not. "Grace and Bert Den Herder" has been written on the back. I discovered this photograph among the photos belonging to the Colenbrander and Lammers families from Iowa. The photograph is likely from the 1920s.
A quick search of the 1930 census shows Grace (b. 1878, Iowa) and Beert (b. 1874, Holland), living in West Branch, Sioux Center, Iowa. Beert is a dairy farmer. On his WW1 Registration card, his address is listed as RR, Sioux Center, Iowa.
It is too bad the photo has suffered some water damage, and a corner tear. Still, it`s quite a nice glimpse into the by-gone buggy days.